$ git clone -n https://src.fedoraproject.org/rpms/libyubikey.git /var/lib/mock/f45-build-17331-498/root/chroot_tmpdir/scmroot/libyubikey
Cloning into '/var/lib/mock/f45-build-17331-498/root/chroot_tmpdir/scmroot/libyubikey'...
$ git fetch origin b2b9f634bc49ae34b0095bd94d976e90570559f8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libyubikey
 * [new ref]         b2b9f634bc49ae34b0095bd94d976e90570559f8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b2b9f63 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild