I've always thought it should be pronounced with the standard Russian voiced velar stop Г [g]. But lately i've been hearing recordings where it's pronounced as voiced glottal fricative [ɦ] like the Ukrainian Г.
This pronunciation also represents the word in both Russian and English articles of Wiktionary, and in 2 out of 3 audio examples on Forvo, all of which are by residents of Russia.
Or is there no 'correct' pronunciation, or is it region dependent within Russia?