$ git clone -n https://src.fedoraproject.org/rpms/ghc-asn1-parse.git /var/lib/mock/f38-build-side-42-init-devel-1110308-30078/root/chroot_tmpdir/scmroot/ghc-asn1-parse
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1110308-30078/root/chroot_tmpdir/scmroot/ghc-asn1-parse'...
$ git fetch origin 1c9fbc54a6be734de0cd9aef67d2752763568a6e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-asn1-parse
 * [new ref]         1c9fbc54a6be734de0cd9aef67d2752763568a6e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1c9fbc5 Convert to %autorelease and %autochangelog